Toyota Tacoma 2015-2018 Service Manual: Precaution

(a) The type of ignition switch used on this model differs according to the specifications
of the vehicle. The expressions listed in the table below are used in this section.

Expression

Ignition Switch (Position)

Engine Switch (Condition)

Ignition Switch off

LOCK

Off

Ignition Switch ON

ON

On (IG)

Ignition Switch ACC

ACC

On (ACC)

Engine Start

START

Start

HANDLING PRECAUTION FOR DYNAMIC RADAR CRUISE CONTROL SYSTEM

Keep in mind the following points when servicing vehicles equipped with the dynamic
radar cruise control system.

(a) The dynamic radar cruise control system is designed to be used when driving
on highways and freeways. The system may not operate correctly when driving on roads
used by pedestrians and bicycles, and may result in an accident.

(b) Do not overly rely on the dynamic radar cruise control system.

The dynamic radar cruise control system is designed to assist in maintaining
an appropriate distance with the preceding vehicle, however, the system
alone is not sufficient. Pay constant attention to the vehicle-to-vehicle
distance and the traffic conditions when using the dynamic radar cruise
control system and decelerate with the brake pedal or accelerate with the
accelerator pedal according to the situation to keep an appropriate distance
with the preceding vehicle.

The dynamic radar cruise control system applies brakes as necessary,
however, there is a limitation on the deceleration control capability. When
the preceding vehicle decelerates rapidly or another vehicle moves in front
of the vehicle, decelerating in time to avoid a collision may not be possible
without additional braking.

(c) The millimeter wave radar sensor dirt detection function

The millimeter wave radar sensor can automatically detect dirt on the
sensor face or the front or back surface of the front emblem, however, dirt
may not always be detected.

The dirt detection function may not operate if a metal object or plastic
sheet with metal coating is attached to the sensor or the front emblem.

The dirt detection function may not operate if there is snow or ice
on the sensor or the front emblem.

HINT:

The preceding conditions may result in the vehicle being unable to maintain an
appropriate distance with the preceding vehicle.

(d) Keep the sensor face and the front and back surfaces of the front emblem
clean.

(e) The dynamic radar cruise control system does not operate or give a vehicle
approach warning for vehicles which are stopped or driving at significantly slower
speeds.

HINT:

This includes vehicles stopped at a tollgate or in traffic, or a preceding vehicle
driving at significantly slower speeds.

(f) When following another vehicle with vehicle-to-vehicle distance control mode
controlling vehicle speed, the vehicle will not accelerate if the cruise control
switch is pushed to +/RES as the speed is controlled in accordance with the speed
of the preceding vehicle.

NOTICE:

If the set vehicle speed is increased by pushing the cruise control switch to
+/RES, the vehicle will accelerate to the newly set speed when the preceding vehicle
moves out of the lane.

HINT:

The set vehicle speed can be confirmed on the multi-information display.

(g) The actual vehicle-to-vehicle distance may be shorter than the set vehicle-to-vehicle
distance when driving on a downhill road.

(h) When a system malfunction is detected, the master warning light illuminates,
a warning message is displayed on the multi-information display in the combination
meter assembly and the buzzer sounds.

(i) Keep the windshield glass clean.

(j) Do not apply excessive force to the forward recognition camera or subject
it to a strong impact.

(k) Do not disassemble the forward recognition camera.

(l) Do not attach a sticker to the windshield glass in the area in front of the
forward recognition camera.

(m) If the heater is used with FOOT mode selected, the upper area of the windshield
glass may fog up, affecting the operation of the forward recognition camera.

HINT:

If the windshield glass fogs up, clear it using the front defroster.

(n) Do not damage the forward recognition camera lens or allow it to become dirty.

HINT:

When cleaning the inner surface of the windshield glass, do not allow
cleaning agent to contact the forward recognition camera lens.

Do not touch the forward recognition camera lens.

(o) Do not place any objects on top of the instrument panel.

HINT:

If an object is reflecting off of the windshield glass, the performance of the
forward recognition camera may decrease.

(p) The vehicle approach warning buzzer does not sound when constant speed control
mode is controlling vehicle speed because the presence of and distance to the preceding
vehicle is not calculated.

(q) As the controls performed by constant speed control mode and vehicle-to-vehicle
distance control mode are different, confirm which mode is selected when using the
dynamic radar cruise control system.

(r) Take the following precautions concerning the radar cruise control system.

(1) Turn the cruise control system off using the cruise control main switch (ON/OFF
button) when not using the cruise control system.

(2) Be careful as the vehicle speed increases when driving downhill with the
cruise control system controlling vehicle speed.

(3) The + (ACCEL)/RES (RESUME) operation changes according to the cruise control
system status. When the cruise control system is controlling vehicle speed, the
+ (ACCEL) function operates. When the cruise control system is not controlling vehicle
speed, the RES (RESUME) function operates.

(4) While the cruise control system is controlling vehicle speed, if the cruise
control indicator turns off and a warning message is displayed, turn the cruise
control system off using the cruise control main switch (ON/OFF button) to reset
the cruise control system. After the cruise control system is reset, if the cruise
control system does not turn on, or if the cruise control system stops functioning
immediately after being turned on, there may be a malfunction.

(5) Do not use the cruise control system where the road conditions are as follows:

Heavy traffic

Steep downhill roads

Roads with sharp turns

Icy or snowy roads

Slippery roads

(6) Do not use the cruise control system while towing.

HANDLING PRECAUTIONS FOR FORWARD RECOGNITION CAMERA

Click here

PRECAUTION WHEN REPLACING ECM

Before replacing the ECM, refer to Registration.

w/o Smart Key System:

Click here

w/ Smart Key System:

Click here

PRECAUTIONS WHEN REPLACING MILLIMETER WAVE RADAR SENSOR ASSEMBLY

When the millimeter wave radar sensor assembly is replaced with a new one, adjustment
of the radar sensor beam axis must be performed.

Click here

PRECAUTION WHEN REPLACING SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY)

After the skid control ECU (brake actuator assembly) is replaced, perform the
yaw rate sensor and G sensor zero point calibration and store the system information.

Click here

PRECAUTION WHEN REPLACING COMBINATION METER ASSEMBLY

When replacing the combination meter assembly, always replace it with a new one.
If a combination meter assembly which was installed to another vehicle is used,
the information stored in it will not match the information from the vehicle and
a DTC may be stored.

Data List / Active Test
DATA LIST / ACTIVE TEST
1. DATA LIST
HINT:
Using the Techstream to read the Data List allows the values or states of switches,
sensors, actuators and other items to be read without removing any parts. This non-intrusive
inspection can be very useful because intermittent conditions or signals ...